OpenDDS 3.31.0

Download OpenDDS-3.31.0.zip (Windows) or OpenDDS-3.31.0.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.31.0 of OpenDDS

Released 2025-01-29

Read the documentation for this release on Read the Docs.

Additions

• Improve --boottime timers to not use a file descriptor per timer. (PR #4835, PR #4871)

Platform Support and Dependencies

• ACE/TAO
  • Updated ACE 8/TAO 4 from 8.0.1 to 8.0.2.
• CMake
  • Fixed an issue where OpenDDS won't build ACE/TAO with Visual Studio 2015. (PR #4843)

Fixes

• Updated ThreadStatusManager for iterative event handling (PR #4830)
• Fix periodic timers with --boottime so that the initial delay is honored. (PR #4835, PR #4871)

Notes

• Releases will now use a new git tagging and branching strategy.
  • Previously releases were tagged as either DDS-X.Y or DDS-X.Y.Z.
    Release tags from now on will also be tagged as vX.Y.Z.
    Any future OpenDDS 3 releases will be tagged both ways, while OpenDDS 4 releases will only be tagged in the new way.
  • New branches can now be used for following specific release series.
    For example v3 will always be updated to the latest 3 release and v3.31 will be used for any future 3.31 releases.

OpenDDS 3.30.0

Download OpenDDS-3.30.zip (Windows) or OpenDDS-3.30.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.30.0 of OpenDDS

Released 2024-10-11

Read the documentation for this release on Read the Docs.

Additions

• Added RtpsRelay -AdmissionMaxParticipantsRange to RtpsRelay options (PR #4774)
  • This option provides another mechanism for detecting load on each RtpsRelay instance
• Improved RelayThreadMonitor error reporting (PR #4778)
  • All threads that have missed the deadline are reported before the process dies. These log messages include the timestamp of the most recent update for each thread that has missed the deadline.
• Embedded a GDB extension in libOpenDDS_Dcps to help make debugging OpenDDS in GDB a bit easier. (PR #4791, PR #4727)
• Use a configurable thread pool for the RtpsRelay event handlers (PR #4808)
  • See RtpsRelay -HandlerThreads

Platform Support and Dependencies

• ACE/TAO
  • Updated ACE 8/TAO 4 from 8.0.0 to 8.0.1.
• CMake
  • Fixed issues using OpenDDS as a subproject with add_subdirectory. (PR #4795)

Fixes

• Fixed cross-compiled builds using Java (PR #4763)
• Fixed a memory leak in the address caches used by the RTPS/UDP transport. (PR #4772)
• Corrected implementation of RtpsRelay -AdmissionControlQueueSize and RtpsRelay -AdmissionControlQueueDuration (PR #4783)
• Fix cleanup of pending associations in the RTPS/UDP transport. (PR #4785)
• Change the tag type separator in opendds_idl to allow underscores in identifiers. (PR #4800)
• Change "reallocating primary receive buffer" to transport debug logging level 3 (PR #4810)

Documentation

• Documented the bit_autopurge_nowriter_samples_delay and bit_autopurge_disposed_samples_delay configuration properties. (PR #4816)

OpenDDS 3.29.1

Download OpenDDS-3.29.1.zip (Windows) or OpenDDS-3.29.1.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.29.1 of OpenDDS

Released 2024-07-31

Read the documentation for this release on Read the Docs.

Fixes

• Fixed code generation for fixed-size structs in Java that caused compilation errors. (PR #4752)

OpenDDS 3.29.0

Download OpenDDS-3.29.zip (Windows) or OpenDDS-3.29.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.29.0 of OpenDDS

Released 2024-07-26

Read the documentation for this release on Read the Docs.

Additions

• Added support for the @optional IDL annotation for the IDL-to-C++11 mapping. @optional maps to either std::optional or a similar custom implementation in the generated code. (PR #4364)
• Implemented the create_sample, create_sample_rc, create_dynamic_sample, and create_dynamic_sample_rc methods on TypeSupport to convert samples to and from DynamicData. (PR #4373)
  • Also documented the existing DynamicDataAdapter class for wrapping IDL-generated types in a DynamicData.
  • See DynamicData and IDL-Generated Types for details.
• Samples from DynamicDataReaders can be modified and passed to DynamicDataWriters. (PR #4609)
• Added config properties to give more control over what UDP ports RTPS uses: (PR #4655)
  • For RTPS Discovery:
    • Added [rtps_discovery] SedpPortMode=probe, which will use ports similar to how the RTPS specification defines them.
      This uses the existing port parameter properties for SPDP and a new one, [rtps_discovery] DY.
    • Added [rtps_discovery] SpdpPortMode as an alias to the now deprecated [rtps_discovery] SpdpRequestRandomPort.
    • Added [rtps_discovery] SpdpMulticastAddress, [rtps_discovery] Ipv6SpdpMulticastAddress, [rtps_discovery] SedpMulticastAddress, and [rtps_discovery] Ipv6SedpMulticastAddress to set the multicast addresses and ports separately on SPDP and SEDP.
    • See here for the full overview of port usage.
  • For RTPS/UDP Transport:
    • Added [transport] PortMode=probe (rtps_udp), which will use ports exactly as the RTPS specification defines them.
      This uses new port parameter properties: [transport] PB (rtps_udp), [transport] DG (rtps_udp), [transport] PG (rtps_udp), [transport] D2 (rtps_udp), and [transport] D3 (rtps_udp).
    • See here for the full overview of port usage.
  • All ports calculated using port parameter properties now warn if they overflow the 16 bit integer.
  • [rtps_discovery] SedpPortMode=probe and [transport] PortMode=probe (rtps_udp) might make config template customizations unnecessary.
• Added dds/OpenDDSConfigWrapper.h and dds/OpenDDSConfigWrapper.idl. (PR #4659)
  • These files will provide defaults for various configuration macros.
  • These files should be included in preference to dds/OpenDDSConfig.h
• Added a new data member, monotonic_timestamp to the InternalThreadBuiltInTopic IDL struct. (PR #4677)
  • monotonic_timestamp is the time of the sample was written (time of last update of this instance) on the monotonic clock.
  • On systems that don't support a monotonic clock, this will be the same value as the corresponding SampleInfo's source_timestamp.
• The ParticipantLocation BIT instance is now published before participant discovery completes. (PR #4693)
  • Applications can use ParticipantLocation to get notified that discovery is in progress. The spec-defined Participant BIT won't be published until participant discovery is complete.
• The Info Destination submessage is now used if present in incoming SPDP messages (PR #4710)
• The ParticipantLocation BIT has a new data member: the SPDP user tag of the peer (0 if none present) (PR #4711)
  • Also added the SPDP user tag to outbound messages which are directed to a specific destination
• [rtps_discovery] ResendPeriod now accepts fractions of a second. (PR #4712)
• OpenDDS now sends pre-emptive (pre-association) acknacks in a form that RTI Connext understands. (PR #4735)
• Pre-association acknacks now fall off like heartbeats. (PR #4735)

Platform Support and Dependencies

• ACE/TAO
  • Added support for building with ACE 8.0.0 / TAO 4.0.0.
  • Updated ACE 6/TAO 2 from 6.5.20 to 6.5.21.
• CMake
  • Allow using the ACE/TAO master branch which now requires C++17. (PR #4618)
• Building with CMake
  • Visual Studio now defaults to using at least C++11 with ACE 6/TAO 2 instead of C++03. (PR #4618)
  • Fixed configure error when using OPENDDS_JUST_BUILD_HOST_TOOLS with CMake <3.28. (PR #4646)

Removals

• Removed OPENDDS_IGNORE_OPENDDSCONFIG_H_FILE macro. (PR #4687)
  • Users manually configuring a build will need to create dds/OpenDDSConfig.h which may be empty.

Fixes

• When DCPSThreadStatusInterval is enabled, threads that run the ACE Reactor now use timers instead of a time-limited select() system call to update the InternalThreadBuiltInTopic. (PR #4677)
  • This allows the InternalThreadBuiltInTopic to be updated accurately on systems that suspend/resume and are configured for boottime timers.
• [rtps_discovery] MaxSpdpSequenceMsgResetChecks is recognized again. (PR #4696)
• RtpsRelay: Recognize clients that are using different IP addresses for SPDP and SEDP. (PR #4718)
• Fixed memory leak of remote locators in the RTPS/UDP transport. (PR #4731)

Documentation

• Documented RtpsRelay -LogHttp, RtpsRelay -AdmissionControlQueueSize, and RtpsRelay -AdmissionControlQueueDuration. (PR #4699)
• Documented [SPDP](https://opendds.read...

OpenDDS 3.28.1

Download OpenDDS-3.28.1.zip (Windows) or OpenDDS-3.28.1.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.28.1 of OpenDDS

Released 2024-05-02

Read the documentation for this release on Read the Docs.

Additions

• Added OPENDDS_COMPILE_WARNINGS and configure option --compile-warnings=[WARNING|ERROR] to enable additional compiler warnings and treating them as errors. (PR #4558)
• Add a configure script option for MPC options requiring a value. (PR #4574)
  • For example, ./configure --mpc:value_template build_flags+="-Wall -Werror".

Platform Support and Dependencies

• Building with CMake
  • Fixed CMake saying it's missing the ACE library when using OPENDDS_ACE_TAO_SRC with an ACE/TAO outside of the build directory. (PR #4604)

Removals

• Values passed to the configure script via --mpcopts are no longer split on spaces. (PR #4574)
  • For example, ./configure --mpcopts="-value_template build_flags+=-Wall -Werror" must now be written as ./configure --mpcopts=-value_template --mpcopts="build_flags+=-Wall -Werror".

Fixes

• Fixed incorrect usage of OpenSSL in gov_gen application. (PR #4591)
• Fix bug where Service_Participant::type_object_encoding doesn't return configured value. (PR #4593)
• Do not send heartbeats during a fragmented send in rtps_udp. (PR #4603)

Documentation

• Added [transport] send_buffer_size (rtps_udp) and [transport] rcv_buffer_size (rtps_udp). (PR #4602)

OpenDDS 3.28.0

Download OpenDDS-3.28.zip (Windows) or OpenDDS-3.28.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.28.0 of OpenDDS

Released 2024-04-16

Read the documentation for this release on Read the Docs.

Additions

• Added an XCDR2 value writer that can be used to serialize static and dynamic samples to XCDR2 encoding format. (PR #4421)
• Added utility to flatten the index to a multi-dimensional array represented by dynamic data. (PR #4421)
• A new header, dds/OpenDDSConfig.h is generated by configure or CMake. (PR #4482, PR #4498)
  • Users manually configuring a build will need to create this file, which may be empty, or add #define OPENDDS_IGNORE_OPENDDSCONFIG_H_FILE to their ace/config.h file.
  • See dds/OpenDDSConfig.h.in for details.
• ConfigStore
  • Converted the transport and discovery loading and domain section to use ConfigStore. (PR #4488, PR #4475, PR #4469, PR #4454)
  • OpenDDS can now be configured with environment variables. (PR #4491)
    • See Configuration with Environment Variables for details.
  • OpenDDS now supports multiple config files. (PR #4505)
    • See Configuration Approach for details.
  • The ConfigStore is available in Java. (PR #4515)
• The @value(x) annotation is now supported on IDL enumerators when using the IDL-to-C++11 mapping. (PR #4519)
  • See @value(v) for details.
• The IDL for the Shapes example was updated for interoperability. (PR #4528)
• Added [rtps_discovery] SpdpUserTag. (PR #4533)
• The data type for the OpenDDS-specific Built-in ParticipantLocation Topic now includes the lease duration. (PR #4545)
  • See OpenDDSParticipantLocation Topic for details.
• Allow compile-time configuration of CLOCK_BOOTTIME as the clock used for timers (PR #4568)
  • If the platform supports it, this can be done using --boottime when building with the configure script or OPENDDS_BOOTTIME_TIMERS when building with CMake.

Platform Support and Dependencies

• Building with CMake
  • Fixed building with CMake and Apple Clang on macOS without setting -DCMAKE_CXX_STANDARD=14 or using ACE 6. (PR #4481, PR #4487)
  • Added support for C++03 and some support for building ACE/TAO with the same compiler and C++ standard as OpenDDS. (PR #4481, PR #4487)
  • Fixed building release builds on Windows at the same time as ACE/TAO (PR #4535)
  • Fixed ACE/TAO build not getting Xerces path when using OPENDDS_XERCES3. (PR #4572)

Fixes

• The ValueReader and ValueWriter interfaces now use ACE_CDR::Fixed as the type of IDL fixed values (PR #4466)
• CMake Config Package
  • Made opendds_target_sources(INCLUDE_BASE) work correctly in more cases, specifically involving generating an export header. (PR #4489)
    • Added opendds_target_sources(EXPORT_HEADER_DIR) and opendds_export_header(DIR) as part of these changes.
• Fixed bug so ConfigStore entries generated by SEDP are cleaned up. (PR #4540, PR #4485)
• Fixed bug where various RtpsDiscoveryConfig setters didn't set. (PR #4540, PR #4485)
• Fixed bug where vread for unions used uninitialized memory. (PR #4544)
• Fixed bug where an RTPS Reader gets stuck when heartbeat advances. (PR #4548)
• XCDR2 KeyOnly serialization of union that has no key now has a delimiter for appendable and mutable extensibility. (PR #4554)

Documentation

• Run-time Configuration (PR #4464, PR #4570, PR #4467, PR #4588)
  • Restructured configuration properties so they can be linked to directly.
    Also reviewed each property description to correct or add missing context as needed.
• Introduction to OpenDDS (PR #4467)
  • Added Plugins to explain generally how discovery, transports, and security libraries must be initialized when statically linking these libraries.
  • Added summaries of important information needed to use the discovery and transport libraries.
• Quality of Service (PR #4520)
  • Added Property QoS, Data Representation QoS, and Type Consistency Enforcement QoS.
  • Every policy now has a box that says if it's mutable, if it affects writer-reader association, and a link to the spec definition.
    Also removed large default value tables and put the default values in these boxes.
  • Added links to the QoS policies.
• Added definitions for instance, unregister, and dispose to the glossary. (PR #4520)
• DDS Security
  • Added summary of important information needed to use the security library. (PR #4467)
  • Moved Fnmatch Expressions into an "annex" file so it can be common between security and partitions QoS. (PR #4520)
• ConfigStore
  • Add configuration capabilities to DevGuide. (PR #4556)

OpenDDS 3.27.0

Download OpenDDS-3.27.zip (Windows) or OpenDDS-3.27.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.27.0 of OpenDDS

Released 2024-02-07

Read the documentation for this release on Read the Docs.

Additions

• Complete interfaces for dealing with DynamicData and DynamicTypes. (PR #4320, PR #4339)
• It is now possible to specify the validity for individual publish/subscribe actions in DDS Security Permission documents. This is an OpenDDS extension. (PR #4344)
• Building with CMake
  • Added new options for how to get ACE/TAO. (PR #4346)
• CMake Config Package
  • Added OPENDDS_ACE_VERSION and OPENDDS_TAO_VERSION. (PR #4346)
• Add a warning that @optional is not supported. (PR #4355)
• Convert discovery configurations (repository, static discovery, rtps_discovery including templates) to key-value store. (PR #4360, PR #4361, PR #4426, PR #4411, PR #4276, PR #4347)
• Convert ICE configuration to key-value store. (PR #4360, PR #4361, PR #4426, PR #4411, PR #4276, PR #4347)
• Change transport_template and rtps_discovery template processing to not generate new keys. (PR #4360, PR #4361, PR #4426, PR #4411, PR #4276, PR #4347)

Platform Support and Dependencies

• Improved support for configure script detection of clang on Linux (PR #4449)
• When using Visual C++, OpenDDS can now be configured using --std=c++NN (NN = 17 or 20). (PR #4452)

Fixes

• Updated the read and write semantics of DynamicData for union, expandable collections (sequence and string), and optional member of an aggregated type. (PR #4278)
• Fixed memory leak where instances were not cleaned up with exlusive ownership. (PR #4343)
• Removed the special handling for sequence members with length code of 5,6, or 7. (PR #4376)
• Reading data from a dynamic data object for a primitive type now must use MEMBER_ID_INVALID id. (PR #4376)
• create_datawriter and create_datareader check if the topic belongs to the same participant as the publisher/subscriber. (PR #4398)
• Fixed uninitialized durability_service in Topic QoS when using QoS-XML. (PR #4424)
• Fixed a bug where compiling IDL with -Lc++11 -Gequality produced code outside of a namespace that didn't compile. (PR #4450)
• SedpLocalAddress now defaults to DCPSDefaultAddress to behave like SpdpLocalAddress and local_address. (PR #4451)

Notes

• TheParticipantFactory* will now return a null pointer when DCPSConfigFile doesn't exist. (PR #4372)

OpenDDS 3.26.1

Download OpenDDS-3.26.1.zip (Windows) or OpenDDS-3.26.1.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.26.1 of OpenDDS

Released 2023-11-14

Read the documentation for this release on Read the Docs.

Fixes

• Building with CMake

  • Fixed Issue #4328, where each run of CMake effectively always appended the MPC features to default.features in ACE. (PR #4330)

• Fixed a corner case in RTPS ParameterList parsing (PR #4336)

• Reject some types of invalid RTPS DataFrag submessages (PR #4348)

OpenDDS 3.26.0

Download OpenDDS-3.26.zip (Windows) or OpenDDS-3.26.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.26.0 of OpenDDS

Released 2023-10-23

Read the documenation for this release on Read the Docs.

Additions

• OpenDDS can now be built using CMake for most common scenarios. (PR #4203, PR #4214)

  • This is still considered somewhat experimental as it doesn't support everything that an MPC-built OpenDDS currently can.
  • See Building OpenDDS Using CMake for details.

• Convert transport configurations (rtps_udp, multicast, shmem, tcp, udp) uses key-value store. (PR #4162, PR #4270, PR #4272, PR #4241, PR #4242, PR #4243, PR #4249, PR #4255)

• CMake Config Package

  • Added opendds_install_interface_files to help install IDL files and the files generated from them. (PR #4203, PR #4214)

  • Added OPENDDS_HOST_TOOLS and OPENDDS_ACE_TAO_HOST_TOOLS to allow cross compiling applications with both MPC and CMake-built OpenDDS. (PR #4203, PR #4214)

  • opendds_target_sources:

    • Added opendds_target_sources(INCLUDE_BASE) to preserve the directory structure of the IDL files for compiling the resulting generated files and installing everything using opendds_install_interface_files. (PR #4203, PR #4214)
    • Added opendds_target_sources(USE_VERSIONED_NAMESPACE) as a shortcut to the -Wb,versioning_\* IDL compiler options. (PR #4203, PR #4214)

• Support sending DynamicDataAdapter sample via DynamicDataWriter (PR #4226)

• Added export macro to ConditionImpl (PR #4295)

Deprecations

• Deprecated OPENDDS_FILENAME_ONLY_INCLUDES in favor of opendds_target_sources(INCLUDE_BASE). (PR #4203, PR #4214)

Fixes

• Improved the subject name parsing to better conform to the DDS Security spec. (PR #4201)

  • The order of attributes in subject names is now significant when comparing them.

• Remove from TypeLookupService when remote endpoint is removed from SEDP (PR #4216)

• WaitSet is now notified when DataWriter liveliness is lost. (PR #4223)

• ICE doesn't use IPv4-mapped IPv6 addresses anymore. (PR #4230)

• Efficiency: Remove per-element locking in JobQueue (PR #4253)

• RtpsRelay: fixed bug in record_activity's use of remove in GuidAddrSet (PR #4254)

• Fix warnings in typeobject_generator when using TAO 3 (PR #4262)

• Fix null pointer when participant is absent when updating locators (PR #4265)

• Initialize variables in TypeObject to silence warnings (PR #4292)

• RtpsRelay: Use ACE_Message_Block's locking strategy for cached SPDP to fix tsan warning (PR #4293)

• Fix tsan warning in ReactorTask (PR #4298)

Documentation

• Remove -Grapidjson flag [opendds_idl] (PR #4231)
• Remove reference to mailing lists (PR #4234)
• Restructured parts of DDS Security page and expanded documentation of some XML security document elements. (PR #4281)
• OS-specific instructions will now be automatically selected based on the browser's user agent. (PR #4281)
• OMG specification section references are now links to that section in the specification PDF. (PR #4281)
• Move build and install instructions to DevGuide (PR #4294)
• Incorporate the quick start guides, FAQ, and shapes demo into the DevGuide. (PR #4297)

Notes

• Using Perl 5.38.0 might prevent TAO from building properly, see here for details.

OpenDDS 3.25.0

Download OpenDDS-3.25.zip (Windows) or OpenDDS-3.25.tar.gz (Linux/macOS) instead of "Source code (zip)" or "Source code (tar.gz)".

Version 3.25.0 of OpenDDS

Released 2023-07-20

Read the documenation for this release on Read the Docs.

Additions

• The Observer interface now has support for dispose and unregister. (PR #4137)

• OpenDDS now stores configuration information in a key-value store. (PR #4138, PR #4134, PR #4151)

  • Configuration values can be set via API, config file, or command line.

    • Currently applies to the common section and common transport configuration.

• Added encode_to_string, encode_to_bytes, decode_from_string, and decode_from_bytes to TypeSupport. (PR #4144, PR #4122, PR #4133, PR #4135)

  • These methods convert samples to and from other formats.
  • Currently only OpenDDS::DCPS::JSON_DATA_REPRESENTATION is supported.

• Add -Gequality option to opendds_idl to generate == and != for structs and unions. (PR #4154)

  • The members of the struct or union must have a type that could appear in a DDS topic and be supported by opendds_idl.
  • The motivation for this change was to make the generated code more useful as many users go on to define these operators.

• CMake Config Package

  • Added executable targets. (PR #4160)

  • OPENDDS_CMAKE_VERBOSE output has been expanded, but now accepts a list of categories to control how much is logged. (PR #4160)

  • Added opendds_export_header to generate an export header. (PR #4160)

  • opendds_target_sources:

    • Added opendds_target_sources(GENERATE_SERVER_SKELETONS) to allow tao_idl to generate code for CORBA servers. (PR #4140)
    • Added opendds_target_sources(AUTO_LINK) as a fine-grained version of OPENDDS_AUTO_LINK_DCPS. (PR #4140)
    • Added opendds_target_sources(SKIP_TAO_IDL) to disable tao_idl. (PR #4140)
    • Added opendds_target_sources(SKIP_OPENDDS_IDL) to disable opendds_idl. (PR #4140)
    • Added opendds_target_sources(USE_EXPORT) to allow overriding the generated export header with an existing one. (PR #4160)

  • Libraries and features can be passed to find_package(OpenDDS COMPONENTS) to change what is required. (PR #4160, PR #4140)

    • See Components for details.

Security

• Fixed null pointer exception caused by RTPS Parameters with incorrect zero size. (PR #4197)

Fixes

• CMake Config Package

  • Made linking dependencies and macro definitions closer match using MPC with OpenDDS and TAO. (PR #4140)
  • Fixed issues with passing OPENDDS_IDL_OPTIONS -SI to opendds_target_sources. (PR #4140)

• Fixed issue deserializing bounded sequences with JSON (PR #4150)

  • The deserialization will fail if the JSON input contains more elements than the bounded sequence can hold.

• Updated the RtpsRelay's tracking of client IP addresses so they are removed when no longer used. (PR #4202)

  • The RtpsRelay configuration option -MaxAddrSetSize was renamed to -MaxIpsPerClient

Documentation

• Moved various markdown files into the Sphinx documentation so that they are now included along with the Developer's Guide: (PR #4139)

  • INSTALL.md is now Building and Installing.
  • docs/dependencies.md is now Dependencies.
  • docs/cmake.md is now Using OpenDDS in a CMake Project.
  • docs/android.md is now Android.
  • docs/ios.md is now iOS.

• Restructured how the documentation is presented to cleanly separate the Developer's Guide and internal documentation. (PR #4139)

• Added a proper main page. (PR #4139)

• Added Glossary. (PR #4139)

• In addition to NEWS.md, started adding release notes to Release Notes. (PR #4125)

Notes

• CMake Config Package

  • OPENDDS_TARGET_SOURCES is now called opendds_target_sources. (PR #4140)

    • CMake macros and functions names are case insensitive, so this should have no effect on CMake code.